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Last updated: 16 June 2019
Status:Final
Date:Thursday 20 December 1956
Time:19:23
Type:Silhouette image of generic L18 model; specific model in this crash may look slightly different
Lockheed 18-56-23 Lodestar
Operator:United States Steel Corporation
Registration: N1245V
C/n / msn: 18-2470
First flight: 1943
Total airframe hrs:3715
Engines: 2 Wright R-1820-56
Crew:Fatalities: 2 / Occupants: 2
Passengers:Fatalities: 1 / Occupants: 1
Total:Fatalities: 3 / Occupants: 3
Aircraft damage: Damaged beyond repair
Location:8 km (5 mls) N of Tyrone, PA (   United States of America)
Phase: En route (ENR)
Nature:Executive
Departure airport:Pittsburgh International Airport, PA (PIT/KPIT), United States of America
Destination airport:New York (unknown airport), NY, United States of America
Narrative:
Lost control while at cruising altitude of 9000 feet. During the uncontrolled descent the aircraft failed structurally as a result of airloads in excess of design strength.

Probable Cause:

PROBABLE CAUSE: "The Board determines that the probable cause of the accident was the loss of control for reasons unknown resulting in a rapid descent during which structural failure occurred."

Classification:
Loss of control

Sources:
» CAB File No. 2-0065


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